Can I show you something? “In common use” makes a huge difference. Read the Supreme Court’s decision making process in District of Columbia v. Heller. This is why I’m advocating for proliferation of Short Barreled Shotguns, Short Barreled Rifles and Suppressors. The more common they become, the harder it will be to reverse course on the non-enforcement decision. This is how the NFA gets dismantled. It’s the same tactic the leftists used to import mass quantities of illegal aliens. If there were only a few hundred in the country, they would all be gone tomorrow, regardless of their protests. Due to the millions that are here and how difficult it is to track all of them down, the government does very little about it except for the most extreme examples. The President and ATF director will change in 2 years, yes. The current make up of the Supreme Court is unlikely to be altered prior to then, unless there’s a vacancy and a Conservative leaning Justice is appointed. Let the legal professionals advance the 2A cause, but you can make a difference with a pop bottle or hacksaw.